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vapors using a photo-ionization detector (PID: Thermo Environmental <br /> 580A, 10. 0 eV, calibrated to isobutylene) . Readings were recorded <br /> on the boring logs. The logs are included in Appendix C. <br /> 3.2 Well Completion <br />' The borings were completed as groundwater monitoring wells (MW-1 <br /> through MW-3) . Each well was completed using 0. 020 PVC screen from <br /> 57 to 77 feet. The filter pack (#3 sand) was installed from 55 to <br /> 77 feet. Bentonite chips were used from 53 to 55 feet and the well <br /> was backfilled to the surface with Portland Cement. Each well was <br /> developed prior to backfilling, using a surge block, and additional <br /> sand was added when necessary. <br /> 3.3 Groundwater Surveying and Sampling <br /> On 17 March 1993 , the water level in each well was measured <br /> relative to the top of the casing. Casing elevations were surveyed <br /> relative to the fire hydrant located on Channel Street, immediately <br /> east of the site. The hydrant was assigned an arbitrary elevation <br /> of 100 feet. <br /> Water levels were measured using a Solonzst water level meter. The <br /> relative piezometric levels and hydraulic gradient were determined <br /> from these data (Table 1 and Figure 3) . <br /> After water levels were measured, a 2" Grundfos Stainless Steel <br /> Pump was used to purge approximately 6 gallons of water from each <br /> well, to stabilize temperature, pH and conductivity (see Table 2) . <br /> The purge water was placed in DOT-approved drums and stored on- <br /> site. <br /> Water samples were collected using disposal plastic bailers. The <br /> water samples were placed in 40 ml EPA vials and transmitted to <br /> WEST Laboratories for analysis. <br /> I 3.3 Laboratory Analyses <br /> The soil samples were analyzed for total petroleum hydrocarbons <br /> (TPH as gasoline) and volatile aromatics (BTE&X) in accordance with <br /> EPA methods 8015 modified and 8020, respectively. Water samples <br /> were analyzed for TPH as gasoline and BTE&X in accordance with the <br /> DHS method for gasoline and EPA method 602 , respectively. <br /> 4. 0 FINDINGS <br /> 4.1 Stratigraphy <br /> The pilot borings penetrated interbedded sandy silt, silty sand, <br /> and clayey, silty, sand (Appendix C) . Colors vary from brown to <br /> gray, with occasional white or orange mottling due to weathering. <br /> 3 <br />